Home / 5,171.52-7,136.64-2,813.70

Finding the Fourth Proportional to 5,171.52, 7,136.64 and 2,813.70

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Solution

The fourth proportional to 5,171.52, 7,136.64 and 2,813.70 is: 3,882.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.52 : 7,136.64 = 2,813.70 : x
  2. Step 2: Convert to fraction form
    5,171.52/7,136.64 = 2,813.70/x
  3. Step 3: Cross multiply
    5,171.52x = 7,136.64 × 2,813.70
  4. Step 4: Simplify right side
    5,171.52x = 20,080,363.97
  5. Step 5: Solve for x
    x = 20,080,363.97/5,171.52
  6. Step 6: Final answer
    x = 3,882.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.